Participation in INI programmes is by invitation only. Anyone wishing to apply to participate in the associated workshop(s) should use the relevant workshop application form.
Organisers: T W B Kibble (Imperial College), A J Bray (Manchester), R M Ward (Durham)
Programme Theme
Topological defects appear in a vast array of physical situations, ranging from unified theories of elementary particles at the very highest energy scales to low temperature laboratory phenomena near absolute zero. These defects exhibit remarkably similar behaviour, whether it be the reconnection of cosmic strings or of superfluid vortices, or the evolution of a defect network in a liquid crystal or in an expanding universe. Despitethis very substantial overlap, there has been surprisingly little interaction between particle physicists and condensedmatter theorists. Indeed, it is not difficult to cite examples of closely related advances which were arrived at independently, a notable example being the simultaneous recognition of the relevance of homotopy theory for classifying topological defects. This programme aims to rectify this deficiency, while furthering the mathematical study of topological defects in each of their primary contexts. The programme will bring together experts in field theory, cosmology, geometry, condensedmatter physics and highenergy particle physics.
Programme
There will be a regular seminar programme throughout the period. Additional topical meetings have been arranged as follows:

1415 July: Topological Defects in Superfluids, Superconductors and Liquid Crystals
Principal lecturers:
A. Leggett, P. McClintock, M. Moore, J. Toner, H. Toyoki, A. Dorsey, P. Shah

21 August3 September: Advanced Study Institute on Formation and Interactions of Topological Defects
Principal lecturers:
A Bray, B Carter, R Durrer, N Goldenfeld, T Kibble, M Kleman, H Kleinert, N Manton, G Mazenko, R Rivers, P Shellard, J Toner, N Turok, B Yurke, W Zurek.
 1213 September: Defects in Firstorder Phase Transitions
 19 September: Spitalfields Day, sponsored by the London Mathematical Society, on Soliton Dynamics and Moduli Spaces
 1213 October: Numerical Approaches to Defect Evolution
Participation
The following are expected to participate in the programme for the periods indicated:
Ach A 21 Aug3 Sep, 1 Nov19 Nov, Albrecht, B 17 Jul31 Jul, 21 Aug3 Sep, Allen, B 17 Sep16 Dec, Bhattacharjee, P 14 Aug10 Sep, Bogolubsky, I 21 Aug17 Sep, Borrill, J 21 Aug3 Sep, 18 Sep29 Oct, Boyanovsky, D 21 Aug3 Sep, 9 Oct29 Oct, Brandenburger, R 7 Jul31 Aug, 1 Nov16 Dec, Bray, A 21 Aug17 Dec, Caldwell, R 14 Jul7 Aug, Carter, B 21 Aug17 Sep, Chudnovsky, E 1 Aug21 Aug, Chuong, N 30 Oct16 Dec, Copeland, E 2 Oct16 Dec, Davis, A 7 Jul16 Dec, De Vega, H 715 Jul, 28 Aug3 Sep, 1630 Oct, Dorsey, A 7 Jul31 Jul, Duff, M 1 Sep17 Dec, Gleiser, M 1 Dec10 Dec, Gottlieb, D 31 Oct26 Nov, Hindmarsh, M 30 Oct16 Dec, Holman, R 24 Jul28 Aug, Jackiw, R21 Aug3 Sep, Kephart, T 2 Oct29 Oct, Kibble, T 7 Jul17 Dec, Kleman M 21 Aug30 Sep, Lee, C 15 Aug30 Aug, Lee, K 7 Jul30 Jul, Leggett, A 7 Jul30 Jul, Letelier, P 2 Oct16 Dec, Liddle, A 21 Aug3 Sep, 30 Oct19 Nov, Lyth, D 1 Oct17 Dec, Maharana, J 2 Oct29 Oct, Mazenko, G 15 Aug16 Sep, Monastyrsky, M 21 Aug15 Oct, Montgomery, R 1 Aug16 Dec, Nattermann, T 1 Aug14 Aug, Nunes, J 17 Jul30 Jul, Pi, S 21 Aug3 Sep, Pranevicius, L 7 Jul13 Aug, Puri, S 1 Oct7 Dec, Rey, S 7 Jul23 Jul, 14 Aug3 Sep, Rivers, R 22 Aug30 Sep, Rivier, N 21 Aug30 Sep, Rutenberg, A 2 Oct16 Dec, Sakellariadou, M 7 Aug3 Sep, Salomaa, M 21 Aug17 Sep, Sasaki, M 2 Oct29 Oct, Schroers, B 7 Aug3 Sep, 27 Nov16 Dec, Schwarz, A 1 Jul17 Jul, 1 Aug20 Sep, Shafi, Q 27 Jul20 Aug, Sikivie, P 14 Nov16 Dec, Sluckin, T 16 Oct12 Nov, Stebbins, A 17 Jul15 Oct, Toner, J 7 Jul30 Jul, 21 Aug3 Sep, Toyoki, H 16 Jul15 Sep, Trebin, H 25 Jul31 Oct, Turok, N 7 Jul16 Dec, Vachaspati, T 7 Jul16 Dec, Vilenkin, A 1 Aug3 Sep, Ward, R 7 Jul17 Dec, Weinberg, E 7 Jul31 Jul, Zakrzewski, W 1 Aug30 Sep, Zurek, W 18 Aug3 Sep, 11 Sep1 Oct
Topological defects appear in a vast array of physical situations, ranging from unified theories of elementary particles at the very highest energy scales to low temperature laboratory phenomena near absolute zero. These defects exhibit remarkably similar behaviour, whether it be the reconnection of cosmic strings or of superfluid vortices, or the evolution of a defect network in a liquid crystal or in an expanding universe. Despite this very substantial overlap, there has been surprisingly little interaction between particle physicists and condensedmatter theorists. Indeed, it is not difficult to cite examples of closely related advances which were arrived at independently, a notable example being the simultaneous recognition of the relevance of homotopy theory for classifying topological defects. This programme aims to rectify this deficiency, while furthering the mathematical study of topological defects in each of their primary contexts. The programme will bring together experts in field theory, cosmology, geometry, condensedmatter physics and highenergy particle physics.